Why have the muhaddithun (scholars of Hadith) not focused on authenticating non-legal traditions reported from the Companions, and is it necessary to ascertain the authenticity of every tradition, even if it does not pertain to legal rulings?

The narrations reported from the Companions concerning asceticism, spiritual refinement, manners, and admonitions are accepted with leniency in the conditions of acceptance, unlike matters of creed and rulings, which require verification and strictness. Scholars have been lenient in narrating hadiths of encouragement and admonition, as well as the sayings of the Salaf, as long as the narrator was not a liar or accused of lying. Many books have also focused on collecting the sayings of the Companions regarding belief, rulings, asceticism, and spiritual refinement, and some contemporary scholars have compiled the authenticated narrations attributed to them. The acceptable standard for dealing with these narrations is to avoid anything that involves a liar or someone accused of lying, and to accept what has a weak chain of narration if its meaning does not contradict sound evidence and if it falls under the categories of encouragement and discouragement.